Gear Trainer Demonstrator (Product Code: SLE/MCE/27) is a sliding mesh gearbox demonstrator used to teach how gear ratios change speed and torque through a transmission, in automotive and theory of machines laboratories. It represents a typical three forward ratio and reverse sliding mesh box, with protractor pulleys on the input and output shafts so students can determine and verify velocity and torque ratios. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
| Parameter | Detail |
|---|---|
| Gearbox type | Sliding mesh |
| Ratios | Three forward ratios and reverse |
| Gears | Gear wheels of different sizes |
| Measurement | Pulleys fitted with protractors on the input and output shafts |
| Experiments | Determination and verification of velocity ratio and torque ratio |
| Use | Classroom demonstrations and student laboratory work |
| System expansion | Can be coupled to an Overdrive and Differential to represent a simple transmission system (these units are not listed as included) |
| Product code | SLE/MCE/27 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
The sliding mesh box is seldom found on modern cars and survives mainly on heavy commercial vehicles, yet its layout is the one from which most modern gearboxes were developed. That makes it the clearest starting point for students of automobile engineering and machine design. With each ratio engaged in turn, the class turns the input pulley through a measured angle, reads the output rotation on the second protractor and works out the velocity ratio.
Applying known loads at the pulleys then lets students compare torque ratio with velocity ratio and discuss losses between them. Counting teeth to predict each ratio before measuring it is a good check, and the reverse gear shows how an extra gear changes the direction of output rotation. The demonstrator works equally well at the front of a lecture room or on a practical bench, which makes it versatile engineering lab equipment for technical institutes.
Jain Scientific Equipments Private Limited, which trades as ScienceLab, is the OEM (original equipment manufacturer) of the Gear Trainer Demonstrator. The gearbox, pulleys and frame are made and assembled at the company's own licensed factory at Saha, Ambala, Haryana, India, and the unit is supplied factory-direct to engineering colleges, ITIs, polytechnics, dealers and importers.
Buying from the manufacturer means that questions about gear wheels, protractor pulleys or matching units reach the people who build them — ask us whenever needed. Read about the company on the ScienceLab profile.
These items extend gear and transmission teaching:
See all items in Theory of Machines.
What type of gearbox is the Gear Trainer Demonstrator?
The Gear Trainer Demonstrator represents a typical sliding mesh gearbox with three forward ratios and reverse. It uses gear wheels of different sizes, showing the basic layout from which most modern gearboxes have been developed.
How do students measure ratios on the Gear Trainer Demonstrator?
The Gear Trainer Demonstrator has pulleys fitted with protractors on its input and output shafts. Students rotate the input, read the output rotation on the second protractor and use these readings to determine and verify velocity and torque ratios.
Can the Gear Trainer Demonstrator be used in lectures?
Yes, the Gear Trainer Demonstrator is suited both to classroom demonstrations by the teacher and to hands-on use by students in the laboratory, so one unit can support theory lectures and practical sessions.
Can the Gear Trainer Demonstrator connect to other transmission units?
The Gear Trainer Demonstrator can be coupled to an Overdrive and Differential to represent a simple transmission system. These units are not listed as part of the demonstrator, so ask us about them when you request a quotation.
Who manufactures the Gear Trainer Demonstrator?
The Gear Trainer Demonstrator is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory in Saha, Ambala, Haryana, India. Buyers receive quotations and after-sales answers directly from the manufacturer.
Does ScienceLab supply the Gear Trainer Demonstrator for export?
Yes, ScienceLab supplies the Gear Trainer Demonstrator to institutions and dealers in India and international markets. Share quantity and destination through the contact page and the manufacturer will prepare a quotation.
Request a Gear Trainer Demonstrator quotation direct from the manufacturer through the ScienceLab contact page, or add it to the enquiry cart. Mention whether you also need the Overdrive and Differential.
Last updated: 24 September 2026